// 12. map()

let arrMap = [1, 2, 3];
let mapped = arrMap.map(element => element * 2);
console.log(mapped); // Output: [2, 4, 6]

// 13. filter()

let arrFilter = [1, 2, 3, 4, 5];
let filtered = arrFilter.filter(element => element > 2);
console.log(filtered); // Output: [3, 4, 5]

// 14. reduce()

let arrReduce = [1, 2, 3, 4, 5];
let reduced = arrReduce.reduce((accumulator, currentValue) => accumulator + currentValue);
console.log(reduced); // Output: 15

// 15. every()

let arrEvery = [1, 2, 3, 4, 5];
let isEvery = arrEvery.every(element => element > 0);
console.log(isEvery); // Output: true

// 16. some()

let arrSome = [1, 2, 3, 4, 5];
let isSome = arrSome.some(element => element > 4);
console.log(isSome); // Output: true

// 17. join()

let arrJoin = [1, 2, 3];
let joined = arrJoin.join('-');
console.log(joined); // Output: "1-2-3"

// 18. reverse()

let arrReverse = [1, 2, 3];
arrReverse.reverse();
console.log(arrReverse); // Output: [3, 2, 1]

// 19. sort()

let arrSort = [3, 1, 2];
arrSort.sort();
console.log(arrSort); // Output: [1, 2, 3]

// 20. find()

let arrFind = [1, 2, 3, 4, 5];
let found = arrFind.find(element => element > 2);
console.log(found); // Output: 3

Array (known as List) functions of javascript 👆

String functions in js 👇

// 1. charAt()

(async () => {
  let { input } = require("jsshort");
  let strCharAt = await input("Enter a string: ");
  let indexCharAt = parseInt(await input("Enter index to retrieve character: "));
  console.log(strCharAt.charAt(indexCharAt));
})();

// 2. charCodeAt()

(async () => {
  let { input } = require("jsshort");
  let strCharCodeAt = await input("Enter a string: ");
  let indexCharCodeAt = parseInt(await input("Enter index to retrieve character code: "));
  console.log(strCharCodeAt.charCodeAt(indexCharCodeAt));
})();

// 3. concat()

(async () => {
  let { input } = require("jsshort");
  let strConcat1 = await input("Enter first string: ");
  let strConcat2 = await input("Enter second string: ");
  console.log(strConcat1.concat(strConcat2));
})();

// 4. includes()

(async () => {
  let { input } = require("jsshort");
  let strIncludes = await input("Enter a string: ");
  let searchString = await input("Enter a search string: ");
  console.log(strIncludes.includes(searchString));
})();

// 5. indexOf()

(async () => {
  let { input } = require("jsshort");
  let strIndexOf = await input("Enter a string: ");
  let searchIndex = await input("Enter string to search for: ");
  console.log(strIndexOf.indexOf(searchIndex));
})();

// 6. lastIndexOf()

(async () => {
  let { input } = require("jsshort");
  let strLastIndexOf = await input("Enter a string: ");
  let lastSearchIndex = await input("Enter string to search for: ");
  console.log(strLastIndexOf.lastIndexOf(lastSearchIndex));
})();

// 7. slice()

(async () => {
  let { input } = require("jsshort");
  let strSlice = await input("Enter a string: ");
  let startSlice = parseInt(await input("Enter start index for slice: "));
  let endSlice = parseInt(await input("Enter end index for slice: "));
  console.log(strSlice.slice(startSlice, endSlice));
})();

// 8. substring()

(async () => {
  let { input } = require("jsshort");
  let strSubstring = await input("Enter a string: ");
  let startSubstring = parseInt(await input("Enter start index for substring: "));
  let endSubstring = parseInt(await input("Enter end index for substring: "));
  console.log(strSubstring.substring(startSubstring, endSubstring));
})();

// 9. toLowerCase()

(async () => {
  let { input } = require("jsshort");
  let strLowerCase = await input("Enter a string: ");
  console.log(strLowerCase.toLowerCase());
})();

// 10. toUpperCase()

(async () => {
  let { input } = require("jsshort");
  let strUpperCase = await input("Enter a string: ");
  console.log(strUpperCase.toUpperCase());
})();